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arXiv 2601.21995astro-ph.HE
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从阴影和内阴影形态限制黑洞参数:考虑厚盘吸积流的影响

Constraining Black Hole Parameters from Shadow and Inner-Shadow Morphology Considering Effects from Thick Disk Accretion Flows

University of Virginia(弗吉尼亚大学);Harvard University(哈佛大学);Center for Astrophysics, Harvard & Smithsonian(哈佛-史密森尼天体物理中心)

Julien A. Kearns, Dominic O. Chang, Daniel C. M. Palumbo, Shane W. Davis

AI总结:

通过分析阴影和内阴影形态,结合厚盘吸积流影响,研究如何限制黑洞质量、电荷等参数。

摘要:

我们研究了发射几何对通过测量黑洞阴影和内阴影来限制黑洞参数的能力的影响。我们调查了从厚和薄吸积盘产生的黑洞吸积流图像中,限制质量、电荷、观测倾角和发射共纬度的能力。我们确认了之前研究的结果,即如果已知观测倾角,独立测量阴影和内阴影的半径可以限制黑洞参数,但发现只有在假设真实发射几何的情况下才有可能。我们研究了在BHEX和NgEHT未来天文台背景下,阴影和内阴影观测对M87*和Sgr A*类系统的限制能力。

英文摘要:

We study the effects of emission geometry on the capability to constrain black hole parameters from measurements of the shadow and inner-shadow of a Reissner-Nordström black hole. We investigate the capability to constrain mass, charge, observer inclination, and emission co-latitude from images of black hole accretion flows that would arise from thick and thin accretion disks. We confirm previous studies that have shown that independent radii measurements of the shadow and inner-shadow can constrain black hole parameters if the viewing inclination is known, but find that it is only possible if the true emission geometry is also assumed. We study the constraining capabilities of the shadow and inner-shadow observations of M87* and Sgr A* like systems within the context of the BHEX and NgEHT future observatories.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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